Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos voluntários participaram do programa 'Meio Ambiente' no total?
 ###Tabelas: 
CREATE TABLE Volunteers (VolunteerID INT, VolunteerName TEXT, Country TEXT); INSERT INTO Volunteers (VolunteerID, VolunteerName, Country) VALUES (1, 'Amina', 'Nigeria'); INSERT INTO Volunteers (VolunteerID, VolunteerName, Country) VALUES (2, 'Boris', 'Russia'); CREATE TABLE VolunteerPrograms (ProgramID INT, ProgramName TEXT); INSERT INTO VolunteerPrograms (ProgramID, ProgramName) VALUES (1, 'Environment'); INSERT INTO VolunteerPrograms (ProgramID, ProgramName) VALUES (2, 'Culture'); CREATE TABLE VolunteerEvents (EventID INT, ProgramID INT, VolunteerID INT, EventDate DATE); INSERT INTO VolunteerEvents (EventID, ProgramID, VolunteerID, EventDate) VALUES (1, 1, 1, '2021-01-01'); INSERT INTO VolunteerEvents (EventID, ProgramID, VolunteerID, EventDate) VALUES (2, 2, 2, '2021-02-01'); INSERT INTO VolunteerEvents (EventID, ProgramID, VolunteerID, EventDate) VALUES (3, 1, 2, '2021-05-01');
SELECT COUNT(DISTINCT Volunteers.VolunteerID) AS TotalVolunteers FROM Volunteers INNER JOIN VolunteerEvents ON Volunteers.VolunteerID = VolunteerEvents.VolunteerID INNER JOIN VolunteerPrograms ON VolunteerEvents.ProgramID = VolunteerPrograms.ProgramID WHERE VolunteerPrograms.ProgramName = 'Environment';